All Systems Operational

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Customer Security Alert:
We have identified phishing emails being sent that appear to originate from support@sip.us.
Please be cautious with unexpected emails, links, attachments, and requests for information. If you are unsure whether a message is legitimate, contact our Support team directly before taking any action.

Uptime over the past 90 days. View historical uptime.
Voice Operational
Inbound Voice Operational
Outbound Voice Operational
Management Portal Operational
Fax Service Operational
Ticketing Support Operational
Messaging Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Scheduled Maintenance

Back End SIP Maintenance Oct 30, 2026 01:00-02:00 EDT

We will be undergoing scheduled back end SIP maintenance during this time. We are not expecting any impact to call delivery.
Posted on Oct 20, 2026 - 13:07 EDT

Oct 29, 2026

No incidents reported today.

Oct 28, 2026

Inbound Calling Degradation Under Investigation
Resolved - This incident has been resolved.
Oct 28, 13:06 EDT
Monitoring - We have identified and addressed the issue that was causing some inbound calls to fail. Our team is continuing to monitor traffic to ensure services remain stable.
Oct 28, 10:11 EDT
Identified - The issue has been identified and a fix is being implemented.
Oct 28, 09:36 EDT
Investigating - We are currently investigating a known issue affecting inbound calls to some phone numbers. Our team is actively working to identify the cause and implement a resolution as quickly as possible.
Oct 28, 08:46 EDT
Back End SIP Maintenance
Completed - The scheduled maintenance has been completed.
Oct 28, 02:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 28, 01:00 EDT
Scheduled - We will be undergoing scheduled back end SIP maintenance during this time. We are not expecting any impact to call delivery.
Oct 20, 13:06 EDT

Oct 27, 2026

No incidents reported.

Oct 26, 2026

Backend Faxmail Database Maintenance
Completed - The scheduled maintenance has been completed.
Oct 26, 23:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 26, 21:00 EDT
Scheduled - We will be performing scheduled database maintenance for Faxmail during this time. Inbound faxes will be queued for delivery. Outbound faxing may be temporarily impacted, so we recommend checking the status of any faxes sent during the maintenance window and resending any that were unsuccessful once maintenance is complete.
Oct 14, 13:37 EDT

Oct 25, 2026

No incidents reported.

Oct 24, 2026

No incidents reported.

Oct 23, 2026

No incidents reported.

Oct 22, 2026

Back End SIP Maintenance
Completed - The scheduled maintenance has been completed.
Oct 22, 02:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 22, 01:00 EDT
Scheduled - We will be undergoing scheduled back end SIP maintenance during this time. We are not expecting any impact to call delivery.
Oct 20, 12:38 EDT

Oct 21, 2026

SIP.US Security Advisory: PHP2SHELL Vulnerability
Resolved - The PHP2SHELL security patch has been successfully applied, and both the SIP.US customer portal is back online and fully accessible.
Oct 21, 14:01 EDT
Monitoring - We are actively responding to PHP2SHELL, a security vulnerability affecting widely used web software. Our Engineering and Security teams are closely monitoring our systems and taking appropriate measures to address and mitigate any potential risk.

At this time, we do not expect inbound or outbound calling traffic to be affected, and normal call processing should continue without interruption.

The security and integrity of our systems and customer information remain our highest priority. If we identify a threat requiring additional protective measures, certain systems or services may be temporarily restricted or taken offline, potentially with limited advance notice.

We understand how important reliable voice communications are to your business. Our teams will continue to closely monitor the situation and will provide additional updates if there are any changes that could impact SIP.US services.
Oct 21, 09:01 EDT

Oct 20, 2026

No incidents reported.

Oct 19, 2026

Backend Portal Maintenance
Completed - The scheduled maintenance has been completed.
Oct 19, 23:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 19, 22:00 EDT
Scheduled - We will be undergoing back end portal maintenance. No impact is expected during the procedure.
Oct 19, 10:21 EDT

Oct 18, 2026

No incidents reported.

Oct 17, 2026

No incidents reported.

Oct 16, 2026

No incidents reported.

Oct 15, 2026

Gateway Maintenance
Completed - The scheduled maintenance has been completed.
Oct 15, 21:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 15, 20:00 EDT
Scheduled - We will be undergoing scheduled maintenance on our Gateways during this time. No impact to calls is expected.
Oct 14, 16:56 EDT
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